149716-72-3Relevant academic research and scientific papers
A practical synthesis of L-valyl-pyrrolidine-(2R)-boronic acid: Efficient recycling of the costly chiral auxiliary (+)-pinanediol
Gibson, Frank S.,Singh, Ambarish K.,Soumeillant, Maxime C.,Manchand, Percy S.,Humora, Michael,Kronenthal, David R.
, p. 814 - 816 (2002)
A practical synthesis of L-valyl-pyrrolidine-(2R)-boronic acid (1) is detailed. A previously disclosed synthesis of 1 (Snow, R.; Kelly, T. R.; Adams, J.; Coutts, S.; Perry, C. (Boehringer Ingelheim Pharmaceuticals, Inc.). WO 93/10127, 1993) was significantly improved by developing an efficient process for recycling the costly chiral auxiliary (+)- pinanediol.
Preparation method of dipeptide valine boron proline salt
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Paragraph 0118; 0121; 0123, (2019/11/28)
The invention provides a preparation method of dipeptide valine boron proline salt. According to the preparation method, pyrrolidine boric acid with protected R groups and valine with protected R groups are used as initial raw materials, and the problem of product loss caused by complex post-treatment during deprotection is avoided, so that the yield of a target product is greatly improved,and mass production is facilitated. Through a resolution method by adopting a resolution agent, the problem of excessive loss of a product with a target configuration due to use of resolution methodswith different solubilities is avoided, so that the yield of the product with the target configuration is greatly improved.
Proline boric acid compound and preparation method and applications thereof
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Paragraph 0048; 0049, (2019/01/06)
The invention provides a compound whose structure is shown as a formula (I) or a salt thereof. The compound is a proline boric acid proteasome inhibitor compound, and has good proteasome inhibitory activity and excellent druggability. The structural formula of the compound is shown as the formula (I).
Synthesis and biological activity of peptide proline-boronic acids as proteasome inhibitors
Han, Liqiang,Wen, Yanzhao,Li, Ridong,Xu, Bo,Ge, Zemei,Wang, Xin,Cheng, Tieming,Cui, Jingrong,Li, Runtao
, p. 4031 - 4044 (2017/07/05)
On the basis of the application of proline-boronic acid as pharmacophore in the kinase inhibitors and our previous research results, using proline-boronic acid as warhead, two series of peptide proline-boronic acids, dipeptide proline-boronic acids (I) and tripeptide proline-boronic acids (II), were designed and synthesized. All the synthesized compounds were first evaluated for their biological activity against MGC803 cell, and then, the best compound II-7 was selected to test its anti-tumor spectrum on six human tumor cell lines and proteasome inhibition against three subunits. The results indicated that series II have much better biological activities than series I. The compound II-7 exhibited not only excellent biological activities with IC50 values of nM level in both cell and proteasome models, but also much better subunit selectivity. Thus, proline-boronic acid as warhead is reasonable in the design of proteasome inhibitors.
Asymmetric synthesis of stable α-aminoboronic esters catalyzed by N-heterocylic carbene and copper(i) chloride
Chen, Jinbo,Chen, Ling-Yan,Zheng, Yue,Sun, Zhihua
, p. 21131 - 21133 (2014/06/09)
Bis(pinanediolato)diboron (B2pnd2) was used as the nucleophile instead of bis(pinacolato)diboron in the stereospecific synthesis of α-aminoboronic esters catalysed by a triazole-based N-hetereocyclic carbene (NHC) and Cu(i) chloride.
HETEROCYCLIC BORONIC ACID COMPOUNDS
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Page/Page column 114-115, (2008/06/13)
Dipeptidyl peptidase IV (DPP-IV)-inhibiting compounds are provided that have formula I: wherein n is 1 to 3; X is CH2; S; O; CF2 or C (CH3)2; Z is H; halogen; hydroxyl; (C1-6)alkoxy; (C1-12)alkyl; (C3-12)cycloalkyl; phenyl; or heteroaryl; where the phenyl and heteroaryl groups are optionally mono- or independently plurisubstituted with R7; optionally, X together with an adjacent ring carbon and Z form a fused cyclopropyl; and optionally, one of the bonds in the ring containing X is a double bond; and CriRii, R1, R1, R3, R4 and R5 are as described herein. Methods for preparing these compounds, and methods for treating diabetes, especially Type II diabetes, and other related diseases are described using the compounds of formula I in pharmaceutical compositions which contain these compounds. Pharmaceutical compositions which contain combinations of these compounds with other antidiabetic agents are also described herein.
